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Finding the Fourth Proportional to 676.24, 1,012.99 and 573.72

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Solution

The fourth proportional to 676.24, 1,012.99 and 573.72 is: 859.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.24 : 1,012.99 = 573.72 : x
  2. Step 2: Convert to fraction form
    676.24/1,012.99 = 573.72/x
  3. Step 3: Cross multiply
    676.24x = 1,012.99 × 573.72
  4. Step 4: Simplify right side
    676.24x = 581,172.62
  5. Step 5: Solve for x
    x = 581,172.62/676.24
  6. Step 6: Final answer
    x = 859.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.